Amazonian floodplain water balance based on modelling and analyses of hydrologic and electrical conductivity data

2017 ◽  
Vol 31 (9) ◽  
pp. 1702-1718 ◽  
Author(s):  
Marie-Paule Bonnet ◽  
Sébastien Pinel ◽  
Jérémie Garnier ◽  
Julie Bois ◽  
Géraldo Resende Boaventura ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Water Balance ◽  
Conductivity Data ◽  
Electrical Conductivity Data

Scaling of Transport Properties of Reservoir Material at Low Saturations of a Wetting Phase

1994 ◽  
Vol 367 ◽  
Author(s):  
Y. Carolina Araujo ◽  
Pedro G. Toledo ◽  
Hada Y. Gonzalez
Keyword(s):  
Electrical Conductivity ◽  
Porous Media ◽  
Transport Properties ◽  
Capillary Pressure ◽  
Power Law ◽  
Scaling Laws ◽  
Pore Space ◽  
Conductivity Data ◽  
Phase Saturation ◽  
Electrical Conductivity Data

AbstractTransport properties of natural porous media have been observed to obey scaling laws in the wetting phase saturation. Previous work relates power-law behavior at low wetting phase saturations, i.e., at high capillary pressures, to the thin-film physics of the wetting phase and the fractal character of the pore space of porous media. Here, we present recent combined porousplate capillary pressure and electrical conductivity data of Berea sandstone at low saturations that lend support to the scaling laws. Power law is interpreted in terms of the exponent m in the relation of surface forces and film thickness and the fractal dimension D of the interface between pore space and solid matrix. Simple determination of D from capillary pressure and m from electrical conductivity data can be used to rapidly determine wetting phase relative permeability and capillary dispersion coefficient at low wetting phase saturations.

Coulometric Titration Studies of Nonstoichiometric Nanocrystalline Ceria

1996 ◽  
Vol 457 ◽  
Author(s):  
O. Porat ◽  
H. L. Tuller ◽  
E. B. Lavik ◽  
Y.-M. Chiang
Keyword(s):  
Electrical Conductivity ◽  
Oxygen Vacancies ◽  
Coulometric Titration ◽  
Surface Adsorption ◽  
Oxygen Nonstoichiometry ◽  
Conductivity Data ◽  
Nanocrystalline Ceria ◽  
Electrical Conductivity Data

ABSTRACTOxygen nonstoichiometry measurements in nanocrystalline ceria, x in CeO2-x, were performed using coulometric titration. The measurements reveal large apparent deviations from stoichiometry, of the order of 10−3 − 10−4 at T = 405 − 455 °C and Po2 = 0.21 − 10−5 atm, as compared to levels of ∼10−9 for coarsened materials under the same conditions. The level of nonstoichiometry is, however, larger then expected from previous electrical conductivity data of nanocrystalline ceria. In addition, x ∝ Po2−½ while Σ ∝po2−1/6. The observed dependence of x(Po2, T) can be explained by either the formation of neutral oxygen vacancies at or near the interface, or by surface adsorption.

Electrical conductivity data of alkanols from 273 to 333 K

2003 ◽  
Vol 102 (1-3) ◽  
pp. 83-91 ◽  
Author(s):  
M. Prego ◽  
E. Rilo ◽  
E. Carballo ◽  
C. Franjo ◽  
E. Jiménez ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Conductivity Data ◽  
Electrical Conductivity Data
Sign in / Sign up

Export Citation Format

Share Document